In one or the other review the setting was often compared to Gotham City. I haven't read the book myself and regarding the reviews it seems like it isn't worth the time but I wanted at least present it here. I guess if I have some money left I will give this a try. maybe it's not that good but who knows, it could at least be short and light entertainement.
quote from io9.com:
"Ghosts of Manhattan" introduces the Ghost, a millionaire-playboy ex-army pilot and engineer turned vigilante. He haunts the streets of an alternate 1920s Manhattan, in which all the cars are coal-powered, everyone has a holographic telephone, and apparently the whole place is run by mobsters. The worst of the mobsters, and enigmatic figure called the Roman, has been performing enigmatic murders which may or may not be connected to some inscrutable, enigmatic plan to destroy the city, and requires the kidnapping of the Ghost's girlfriend....
sample chapters can be read here. http://pyrsamples.blogspot.com/2010/04/ghosts-of-manhattan-by-georg...
It's a good read. I recommend it, and it's rated pretty highly if you're into pulp-style adventure.
But, if you can turn off your brain for a bit and get into the book, it's not as bad as everyone says.
I realize this is about three years late, but I just finished the book... just to clarify I'm not that slow a reader. I read it in about four days, it just took me a while to get around to reading it. I thought it was fun. It was like a pulpy The Shadow, meets Lovecraft, meets The Great Gatsby, and was pretty much what I expected, and to be honest I didn't expect much. To criticize this book for what it lacks is like watching pro-wrestling and and being disappointed because you were expecting Shakespeare. There was the dark hero, he fought bad guys, and stuff blew up, and all of it occurring in a jazz age world of rocket powered biplanes, zeppelins, and coal powered cars. The combination of which I found to be just magical. If none of the afore mentioned things appeals to you, then why are you visiting this site in the first place?, and by all means, don't read the book.